[1] Univ Liege, Dept Publ Hlth Epidemiol & Hlth Econ, Liege, Belgium
[2] Univ Oxford, Arthrit Res UK Ctr Sport Exercise & Osteoarthrit, Oxford, England
[3] Diakonhjemmet Hosp, Dept Rheumatol, Oslo, Norway
[4] Univ Paris 05, Sorbonne Paris Cite, Cochin Hosp, AP HP,Dept Rheumatol,Div Phys Med & Rehabil, Paris, France
[5] Univ Liege, Dept Clin Chem, Liege, Belgium
[6] Univ Nova Lisboa, NOVA Med Sch, CEDOC, CHLO,Hosp Egas Moniz,Dept Rheumatol, Lisbon, Portugal
[7] Univ Lyon, Hosp E Herriot, INSERM, UMR 1033, Lyon, France
[8] TRB Chemed Int SA, Geneva, Switzerland
[9] King Saud Univ, Dept Biochem, Coll Sci, Riyadh, Saudi Arabia
[10] Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton, Hants, England
[11] Univ Autonoma, Dept Rheumatol, Bone & Joint Res Unit, Fdn Jimenez Diaz, Madrid, Spain
[12] AGES, Sci Off, Austrian Med & Med Devices Agcy, Vienna, Austria
[13] State Hosp Stockerau, Dept Med 2, Ctr Rheumatol Lower Austria, Stockerau, Austria
[14] CNR, Aging Program, Padua, Italy
[15] IBN ROCHD Univ Hosp, Dept Rheumatol, Casablanca, Morocco
[16] Sci Res Inst Emergency Care, St Petersburg, Russia
[17] Univ Oxford, NIHR Musculoskeletal Biomed Res Unit, Oxford, England
[18] Univ Lyon, CHU St Etienne, Hop Nord, Dept Rheumatol, St Etienne, France
[19] Univ Lyon, INSERM 1059, St Etienne, France
[20] CHVR, Hop Valais HVS, Dept Orthoped & Traumatol, Div Musculoskeletal Internal Med & Oncol Rehabil, Crans Montana, Switzerland